{
  "annotation_id": "8bb09c95-0b23-4a34-81e2-340189dbf662",
  "date_created": "2026-03-02T18:00:43.270000Z",
  "date_modified": "2026-03-02T18:00:43.270000Z",
  "file_hash": "8a7d0bbf64a5e78eb71ae148e5d18041786c03b47e59c6f712e76ec676017493",
  "private": false,
  "record": {
    "abstract": "Additional information about the eigenvalues and eigenvectors of a physical\nsystem demands extension of the effective Hamiltonian in use. In this work we\nextend the effective Hamiltonian that describes partially a physical system so\nthat the new Hamiltonian comprises, in addition to the information in the old\nHamiltonian, new information, available by means of experiment or theory. A\nsimple expression of the enlarged Hamiltonian, which does not involve matrix\ninversion, is obtained. It is also shown that the Lee-Suzuki transformation\neffectively put the initial Hamiltonian in a diagonal block form.",
    "arxiv_id": "physics/0210065",
    "authors": [
      "C P Viazminsky",
      "S Baza"
    ],
    "categories": [
      "physics.gen-ph"
    ],
    "title": "Incorporation of New Information in an Approximate Hamiltonian",
    "url": "https://arxiv.org/abs/physics/0210065"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "7a869881-05b0-4567-b461-edbeade71b21",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}